MYICALL IP Phone     This MYICALL IP phone uses none standard PA1688 software and hardware design. We can not provide upgrade files for it. Front. Back. Keypad. Keypad side 2. Flash chip MX29LV008TTC. The flash indicates that it might be a modified PA168S design, but function keys do not match after trying standard PA168S software. PCB. Large Above pictures taken by Hanzify1983.